Ornamental Mono
Odudo Mono
osaka mono
OctaMono-Regular
OctaMono-Bold
OCR-A-Regular
Oekaf Mono
OCR-BCyr
Oktal Mono
OpenDyslexicMono
OCR-B-10Pitch
Oxygen Mono
OCR-B 10 Pitch
OCR-B-Seagull
OCR-A-Seagull
OCR-B-Digits
OCR-A - LabelWorks
Ocelot Monowidth
OCR-B-10 BT
OCR-A BT